Hi Joe Kapahulu,
A good, solid, rack tht fits your needs is a basic requirement. Some racks have adjustable shelves (a big plus) or can be custom built to your specifications (e.g., Billy Bags). If you have a turntable, a proper rack is even more critical, particularly if the floor is a suspended wooden floor. I have a custom built Zoethecus rack (no longer in business) that is more than five feet high. To make it stable, I used a cleat to a back wall to anchor it to a back wall. If you have a table, consider a low rack for stability or a similar arrangement to stabilize the rack.
My own experience with extreme vibration dampening through use of exotic racks and shelves is that results vary quite a bit depending on the system and components. I use a Symposium Ultra shelf under my Linestage and another under my amps, which sit on the floor. These shelves provide a very subtle improvement over regular shelves/amp stand. They don't appear to help with my CD player (Naim CD555), and in a friend's system, the shelves sounded bad (lean and bleached sound) under a CD player (Audio Aero Capitole). Under a Levinson No. 32 preamp, Symposium Rollerblocs provided good coupling to the shelf, but I don't use them for my current linestage (Emotive Audio Epifania) because of the perforated bottom on the unit. That is why I earlier recommended that you experiment with the shelving and coupling of components to the shelves after getting a good basic rack.
I have no idea how high end you are looking for racks. Good basic racks can be had from Atlantis (adjustable shelves) and Billy Bags (customizable spacing of shelves).
On the higher end extreme, Silent Running Audio is a possible choice. I am not familiar with their rack, though I have heard, and I like, their equipment support shelves. A friend's Tron amps came with two custom sized SRA amp stands so the manufacturer thought it was a worthy addition. Their stands/shelves are custom designed for the specific weight and weight distribution of each component (different elastomers at four corners of the shelf).
A similar approach is taken with HRS racks and shelves. A friend bought a huge, three section HRS rack. It is the most heavy, beautiful to look at and solid rack I've encountered. Another friend was in charge of construction/setup. He was amazed at the close construction tolerances and perfection of manufacture. Each shelf was specifically tuned to the particular component that was being placed on the shelf. The BAD news is that the whole set up cost $50,000. I hope this represents the extreme of what one can spend.
